Titan Attacks!

As the last surviving tank commander on Earth, single-handedly turn back the evil invading alien army, drive back the Titans across the Solar System, and defeat them on their homeworld... Titan Attacks has the same easy-to-learn and addictive gameplay of the classic arcade shoot 'em up

The player is the last surviving tank commander on Earth, and must defend the planet from an onslaught of aliens from the moon Titan.